The second "high risk" flaw involves problems in calculating image size. The security bug creates a means for hackers to crash vulnerable systems, for example after tricking users into visiting malicious constructed websites.

Both flaws are explained in more depth in an advisory by Google here. It's the second time in two weeks that Google has updated its browser software in response to a security problem. A previous update - issued on 23 April - addressed an unrelated lower-risk security bug.

Google Chrome contains a background updating function so the browser will update itself to the latest version, Chrome 1.0.154.64, unbeknownst to most users. ®